PURPOSE: An automatic bicycle locking system is provided to construct a safe bicycle parking system and to prevent interception of the bicycle. CONSTITUTION: An automatic bicycle locking system comprises a central control part(1), a LCD window(2) and a motor driver(4). The central control part drops a command required to park the bicycle. A user inputs the command on a keypad. A motor driver receives the signal, in which the user inputs, from the central control part. The motor driver operates the motor according to the received signal and locks the bicycle with an iron bar.
